Daughters '93 is being real finicky restarting after driving for a bit. Cold (morning) starting is great fires up and runs smooth after only a few seconds of powering the starter. Warm start - tonight we drove for about 20 minutes at highway speed (60 mph) then parked at a restaurant for probably 20 minutes, had to turn the starter 3 times for about 20 seconds each until it started. Seamed to run, idle & drive fine on the way home. She has complained about this for about 2 weeks, but this is the first time I witnessed. Other times I tried to check it out, started up just fine, but was probably a colder engine. She has said the CEL has lit a few times too but goes off. I did not see the CEL tonight. This is a '93 so no OBD2. How long are past CEL codes stored in this ECU? 178K on the clock. We have owned it almost 10 months with no other issues. Any ideas what to look at?

Codes are stored until cleared.

May help with reading codes.